If preferred, you can easily remove all properties with hidden or undisclosed prices from appearing in an automated property panel.

Start by navigating to the Emails menu, and select the property panel you'd like to amend to make it active. The auto feed toggle should be in the on position.
From here:

• Select Define Properties
• Choose the Advanced sub menu.
• Tick Exclude properties with hidden or undisclosed prices
• Select Update to save your changes.

Any properties with hidden or undisclosed prices will then be removed from this panel (only).